Time-based contextualizing of multiple pages for electronic book reader

ABSTRACT

A system and associated method for contextualizing a page turn in an electronic book pursuant to a snap gesture made by a user on a touch screen of a tablet device, as performed by an e-reader program running in the tablet device. The snap gesture is quantified with data elements including linger time and direction of the snap gesture. The quantified snap gesture is utilized in identifying a target page number to display on the touch screen responsive to at least one predefined data element of the quantified snap gesture such that the user is enabled to turn multiple pages of the electronic book by the snap gesture as turning multiple pages of a paper book.

BACKGROUND

The present invention discloses a system and associated method forgrouping multiple pages of an electronic book proportional to a gestureof a user interacting through a touch screen with an electronic bookreader application, which improves user-friendliness of the e-bookreader application by making browsing the e-book feel like browsing oftraditional books. Conventional e-reader applications support sequentialturning of pages one by one, forward or backward, going directly to abeginning or an end of a document, or directly turning to a specificpage when the user provides a page number in a document.

BRIEF SUMMARY

According to one embodiment of the present invention, a method forcontextualizing a page turn in an electronic book pursuant to a snapgesture made by a user on a touch screen of a tablet device, whereinsaid method is performed by an e-reader program running in the tabletdevice, said method comprises: quantifying the snap gesture, responsiveto receiving the snap gesture via the touch screen, wherein thequantified snap gesture comprises a first data element of direction ofthe snap gesture (Dr) and a second data element of linger time of thesnap gesture (LT); identifying a target page number for the page turn inthe electronic book by use of the quantified snap gesture; anddisplaying, on the touch screen, a target page of the electronic bookthat corresponds to the target page number from said identifying.

According to one embodiment of the present invention, a computer programproduct comprises a computer readable memory unit that embodies acomputer readable program code. The computer readable program codecontains instructions that, when run by a processor of a computersystem, implement contextualizing a page turn in an electronic bookpursuant to a snap gesture made by a user on a touch screen of a tabletdevice.

According to one embodiment of the present invention, a computer systemcomprises a processor, a memory coupled to the processor, and a computerreadable storage device coupled to the processor, said storage devicecontaining program code configured to be executed by the processor viathe memory to implement contextualizing a page turn in an electronicbook pursuant to a snap gesture made by a user on a touch screen of atablet device.

According to one embodiment of the present invention, a process forsupporting computer infrastructure, said process comprising providing atleast one support service for at least one of creating, integrating,hosting, maintaining, and deploying computer-readable code in acomputing system, wherein the code in combination with the computingsystem is capable of performing contextualizing a page turn in anelectronic book pursuant to a snap gesture made by a user on a touchscreen of a tablet device.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 illustrates a system 10 for time-based contextualizing ofmultiple pages for an e-reader application 14 employed in a tabletdevice 12, in accordance with embodiments of the present invention.

FIG. 2 is a flowchart depicting a method for time-based contextualizingof multiple pages for the e-reader application in FIG. 1, as performedby the time-based contextualizer, in accordance with the embodiments ofthe present invention.

FIG. 3 is a flowchart depicting snap detection performed by thetime-based contextualizer in step 100 of FIG. 2, in accordance with theembodiments of the present invention.

FIG. 4 is a flowchart depicting target page identification performed bythe time-based contextualizer in step 200 of FIG. 2, in accordance withthe embodiments of the present invention.

FIG. 5 illustrates a computer system 90 used for time-basedcontextualizing of multiple pages for an e-reader application employedin a tablet device, in accordance with the embodiments of the presentinvention.

DETAILED DESCRIPTION

FIG. 1 illustrates a system 10 for time-based contextualizing ofmultiple pages for an e-reader application 14 employed in a tabletdevice 12, in accordance with embodiments of the present invention.

The system 10 comprises a user 11 and the tablet device 12. The tabletdevice 12 comprises a capacitive/resistive (CR) touch screen 13, thee-reader application 14 and data storage 21. The user 11 operates thee-reader application 14 by interacting with the CR touch screen 13 inaccessing documents stored in the data storage 21.

The CR touch screen 13 is a touch screen of a type utilizing capacitanceor resistance property of electricity. The CR touch screen 13 recognizesa location where the user 11 contacts on the CR touch screen 13, andduration how long the user 11 continues the contact made on respectivelocations. The user 11 may use, inter alia, a finger, a stylus, etc., inmaking the touch motions on the CR touch screen 13.

The e-reader application 14 comprises a time-based contextualizer 16which enables the user 11 to turn arbitrary number of pages of thedocument by interacting with the CR touch screen 13 with a snap gesture.The snap gesture comprises an initial contact and a sweeping motion,wherein the initial contact is made upon the user 11 touching the CRtouch screen 13 at a contact point, and wherein the sweeping motionrefers to a unidirectional movement of the contact point along the CRtouch screen 13 following the initial contact. The CR touch screen 13captures the snap gesture data and subsequently transfers the capturedsnap gesture data to the e-reader application 14. In this specification,the snap gesture data comprises linger time (LT), direction (Dr), anddistance (D), wherein LT is defined as a period of time during the user11 lingers on the contact point, calculated as a difference between thetime of the initial contact (T0) and the beginning of the sweepingmotion (T1), that is LT=(T1−T0), wherein Dr is selected from a groupconsisting of {forward, backward} indicating the direction of thesweeping motion, and wherein D is defined as a track length of thesweeping motion on the CR touch screen 13. See FIG. 2 infra for stepsperformed by the time-based contextualizer 16.

The data storage 21 comprises a section/page turn table 22, asection/page turn function 23, and a document 24. The document 24 is anelectronic book displayed on the CR touch screen 13 that the user 11 isviewing and turning pages with snap gestures. The section/page turntable 22 and the section/page turn function 23 are utilized by thee-reader application 14 to calculate a number of pages to turn based onLT, Dr, and D of the snap gesture data captured by the CR touch screen13 as currently given by the user 11. In this specification, the term“section” is used to indicate a subcomponent of the document 24 thatdivides the document 24 into disjoint groups of pages, and is usedinterchangeably with any other term indicating such subunit of thedocument such as, inter alia, part, chapter, etc.

The section/page turn table 22 and the section/page turn function 23 areemployed in calculating the number of pages to turn by the time-basedcontextualizer 16. See descriptions of FIG. 2 infra for details of thesection/page turn table 22 and the section/page turn function 23 as usedby the time-based contextualizer 16.

FIG. 2 is a flowchart depicting a method for time-based contextualizingof multiple pages for the e-reader application in FIG. 1 supra, asperformed by the time-based contextualizer, in accordance with theembodiments of the present invention.

In step 100, the time-based contextualizer detects snap gesture made bythe user. See description of FIG. 3 infra for detailed operations ofstep 100. Then the time-based contextualizer proceeds with step 200.

In step 200, the time-based contextualizer identifies a target page ofthe document to display in accordance with the snap gesture detectedfrom step 100 supra. See description of FIG. 4 infra for detailedoperations of step 200. Then the time-based contextualizer terminatesprocessing the snap gesture.

FIG. 3 is a flowchart depicting snap detection performed by thetime-based contextualizer in step 100 of FIG. 2 supra, in accordancewith the embodiments of the present invention.

In step 110, the time-based contextualizer detects a point of contact(PC) for the snap gesture on the capacitive/resistive (CR) touch screenof the tablet device, on which the user interacts with the tablet devicefor page turning. Then the time-based contextualizer proceeds with step120.

Steps 120 through 140 are repeatedly performed while the PC exists, thatis while the user maintains a continuous contact on the CR touch screen.The time-based contextualizer initializes linger time (LT) value of thePC to zero (0) only when the time-based contextualizer proceeds withstep 120 from step 110 supra. Upon losing the PC indicating that theuser discontinues the contact detected as the PC in step 110 supra, thenthe time-based contextualizer proceeds with step 150 infra.

In step 120, the time-based contextualizer increments the LT value byone (1) to represent a lapse of one (1) predefined time unit. In otherembodiment of the present invention, the LT value may be incremented byother predefined number for a fixed number of clock cycles. Then thetime-based contextualizer proceeds with step 130.

In step 130, the time-based contextualizer determines whether or not thePC makes the sweeping motion of the snap gesture by moving on the CRtouch screen surface. If the time-based contextualizer determines thatthe PC moves on the CR touch screen surface, then the time-basedcontextualizer proceeds with step 140. If the time-based contextualizerdetermines that the PC stands still on the CR touch screen surface, thenthe time-based contextualizer loops back to step 120.

In step 140, the time-based contextualizer records the sweeping motionof the snap gesture as determined in step 130 supra. Then the time-basedcontextualizer loops back to step 130.

In step 150, the time-based contextualizer calculates direction (Dr)value and distance (D) value of the snap gesture, respectively, based onsweeping motion data recorded in step 140 supra, because a current snapgesture has concluded by the user. Then the time-based contextualizerproceeds with step 160.

In step 160, the time-based contextualizer stores Dr value, D value,respectively calculated from step 150, and LT value resulting from atleast one run of step 120 as data associated with the current snapgesture and make the current snap gesture data values available to step200 of FIG. 2 supra for target page identification. Then the time-basedcontextualizer proceeds with step 200 of FIG. 2 supra.

FIG. 4 is a flowchart depicting target page identification performed bythe time-based contextualizer in step 200 of FIG. 2 supra, in accordancewith the embodiments of the present invention.

In step 210, the time-based contextualizer determines whether Dr valueof the snap gesture data generated in step 100 of FIG. 1 supra is either“forward” or “backward”. If the time-based contextualizer determinesthat the Dr value of the snap gesture data is “forward”, then thetime-based contextualizer proceeds with step 211. If the time-basedcontextualizer determines that the Dr value of the snap gesture data is“backward”, then the time-based contextualizer proceeds with step 219.

In step 211, the time-based contextualizer maps the Dr value to amathematical addition (+) operation for following steps as the snapgesture is directed forward as represented by the Dr value “forward”.Then the time-based contextualizer proceeds with step 220.

In step 219, the time-based contextualizer maps the Dr value to amathematical subtraction (−) operation for following steps as the snapgesture is directed backward as represented by the Dr value “backward”.Then the time-based contextualizer proceeds with step 220.

In step 220, the time-based contextualizer determines whether or not thedocument is organized in sections grouping pages into disjoint groups.If the time-based contextualizer determines that the document isorganized in sections as the disjoint groups of pages, then thetime-based contextualizer proceeds with step 223. If the time-basedcontextualizer determines that the document is not organized insubcomponent but has only pages, then the time-based contextualizerproceeds with step 227. In other embodiment of the present invention,wherein the document has more than two subcomponents hierarchicallygrouping pages, steps 223, 233, 243, and 253 are repeated as a unit fora next level of subcomponent of the document until the time-basedcontextualizer finds a target page.

In step 223, the time-based contextualizer loads a section turn mappingselected from a section turn table and a section turn function, from thedata storage to memory. In one embodiment of the present invention,either a section turn table or a section turn function is implementedfor the time-based contextualizer to map the snap gesture to arespective section turn value. In another embodiment of the presentinvention, both the section turn table and the section turn function areimplemented and the user selects which one to use in configurationsettings of the tablet device. In the same embodiment, the section turntable consists of four (4) section turn table records, {0, 0.1, 1},{0.1, 0.2, 2}, {0.2, 0.5, 5}, and {0.5, MaxLT, MaxSecTrn}, wherein firsttwo columns of a section turn table record represent a respective rangeof linger time (LT) values, wherein a first column represents a lowerbound of the respective range of LT values, wherein a second columnrepresents an upper bound of the respective range of LT values, and athird column represents a section turn value corresponding to the firsttwo columns of the respective section turn table record, such that afirst section turn table record {0, 0.1, 1} indicates that a first rangeof LT values between zero (0) and 0.1 seconds corresponds to a firstsection turn value of one (1), a second section turn table record {0.1,0.2, 2} indicates that a second range of LT values between 0.1 and 0.2seconds corresponds to a second section turn value of two (2), a thirdsection turn table record {0.2, 0.5, 5} indicates that a third range ofLT values between 0.2 and 0.5 seconds corresponds to a third sectionturn value of five (5), and a fourth section turn table record {0.5,MaxLT, MaxSecTrn} indicates that a fourth range of LT values greaterthan 0.5 seconds up to a predefined maximum linger time value MaxLTcorresponds to a fourth section turn value of a maximum number ofsection turns in the document MaxSecTrn. In another embodiment of thepresent invention, the section turn function maps LT to a section turnvalue associated with each LT, that is, f(LT)→SecTrn, wherein LTrepresents a value from Linger Time domain, and wherein SecTrnrepresents a value from Section Turn domain. Then the time-basedcontextualizer proceeds with step 233.

In step 233, the time-based contextualizer finds a section turn valueassociated with LT of the snap gesture in the section turn mappingloaded in step 223 supra. Then the time-based contextualizer proceedswith step 243.

In step 243, the time-based contextualizer calculates a target sectionbased on a current section, the section turn value from step 233 supra,and the operation mapped in steps 210, 211 or 219 supra, wherein thecurrent section indicates a section value in the document at time ofdetecting the snap gesture. Then the time-based contextualizer proceedswith step 253.

In step 253, the time-based contextualizer determines a predefined pagenumber in the target section as a target page to display. The predefinedpage number may be, inter alia, a random page number within the targetsection, a smallest page number of the target section, etc. Then thetime-based contextualizer proceeds with step 260.

In step 227, the time-based contextualizer loads a page turn mapping forfollowing steps. In one embodiment of the present invention, a page turntable consists of four (4) page turn table records, {0, 0.1, 5}, {0.1,0.2, 10}, {0.2, 0.5, 15}, and {0.5, MaxLT, MaxPgTrn}, wherein first twocolumns of a page turn table record represent a respective range oflinger time (LT) values, wherein a first column represents a lower boundof the respective range of LT values, wherein a second column representsan upper bound of the respective range of LT values, and a third columnrepresents a page turn value corresponding to the first two columns ofthe respective page turn table record, such that a first page turn tablerecord {0, 0.1, 5} indicates that a first range of LT values betweenzero (0) and 0.1 seconds corresponds to a first page turn value of five(5), a second page turn table record {0.1, 0.2, 10} indicates that asecond range of LT values between 0.1 and 0.2 seconds corresponds to asecond page turn value of ten (10), a third page turn table record {0.2,0.5, 15} indicates that a third range of LT values between 0.2 and 0.5seconds corresponds to a third page turn value of fifteen (15), and afourth section turn table record {0.5, MaxLT, MaxPgTrn} indicates that afourth range of LT values greater than 0.5 seconds up to a predefinedmaximum linger time value MaxLT corresponds to a fourth page turn valueof a maximum number of page turns in the document MaxPgTrn. For the sameembodiment wherein a page turn function is utilized, the page turnfunction of LT maps to a page turn value for each LT, that is,f(LT)→PgTrn, wherein LT represents a value from Linger Time domain, andwherein PgTrn represents a value from Page Turn domain. Then thetime-based contextualizer proceeds with step 237.

In step 237, the time-based contextualizer finds a page turn valueassociated with LT of the snap gesture in the page turn mapping loadedin step 227 supra. Then the time-based contextualizer proceeds with step247.

In step 247, the time-based contextualizer calculates a target page tobased on a current page, the page turn value from step 237 supra, andthe operation mapped in steps 210, 211 or 219 supra, wherein the currentpage indicates a page number value in the document at time of detectingthe snap gesture. If the operation is an addition, then the target pageresults from advancing the page turn value from the current page. If theoperation is a subtraction, then the target page results from taking thepage turn value from the current page such that the page advancement isreversed. Then the time-based contextualizer proceeds with step 260.

In step 260, the time-based contextualizer display the target pagecalculated in step 253 or step 247, supra, on the CR touch screen of thetablet device. Then the time-based contextualizer terminates processingthe current snap gesture.

FIG. 5 illustrates a computer system 90 used for time-basedcontextualizing of multiple pages for an e-reader application employedin a tablet device, in accordance with the embodiments of the presentinvention.

The computer system 90 comprises a processor 91, an input device 92coupled to the processor 91, an output device 93 coupled to theprocessor 91, and memory devices 94 and 95 each coupled to the processor91. In this specification, the computer system 90 represents any type ofprogrammable data processing apparatus.

The input device 92 is utilized to receive input data 96 into thecomputer system 90. The input device 92 may be, inter alia, a keyboard,a mouse, a keypad, a touch screen, a scanner, a voice recognitiondevice, a sensor, a network interface card (NIC), a Voice/video overInternet Protocol (VOIP) adapter, a wireless adapter, a telephoneadapter, a dedicated circuit adapter, etc. The output device 93 isutilized to communicate results generated by the computer program code97 to a user of the computer system 90. The output device 93 may be,inter alia, a printer, a plotter, a computer screen, a magnetic tape, aremovable hard disk, a floppy disk, a NIC, a VOIP adapter, a wirelessadapter, a telephone adapter, a dedicated circuit adapter, an audioand/or visual signal generator, a light emitting diode (LED), etc.

Any of the components of the present invention can be deployed, managed,serviced, etc. by a service provider that offers to deploy or integratecomputing infrastructure with respect to a process for time-basedcontextualizing of multiple pages for the e-reader application of thepresent invention. Thus, the present invention discloses a process forsupporting computer infrastructure, comprising integrating, hosting,maintaining and deploying computer-readable code into a computing system(e.g., computing system 90), wherein the code in combination with thecomputing system is capable of performing a method for time-basedcontextualizing of multiple pages for the e-reader application.

In another embodiment, the invention provides a method that performs theprocess steps of the invention on a subscription, advertising and/or feebasis. That is, a service provider, such as a Solution Integrator, canoffer to create, maintain, support, etc., a process for time-basedcontextualizing of multiple pages for the e-reader application of thepresent invention. In this case, the service provider can create,maintain, support, etc., a computer infrastructure that performs theprocess steps of the invention for one or more customers. In return, theservice provider can receive payment from the customer(s) under asubscription and/or fee agreement, and/or the service provider canreceive payment from the sale of advertising content to one or morethird parties.

While FIG. 5 shows the computer system 90 as a particular configurationof hardware and software, any configuration of hardware and software, aswould be known to a person of ordinary skill in the art, may be utilizedfor the purposes stated supra in conjunction with the particularcomputer system 90 of FIG. 5. For example, the memory devices 94 and 95may be portions of a single memory device rather than separate memorydevices.

As will be appreciated by one skilled in the art, aspects of the presentinvention may be embodied as a system, method or computer programproduct. Accordingly, aspects of the present invention may take the formof an entirely hardware embodiment, an entirely software embodiment(including firmware, resident software, micro-code, etc.) or anembodiment combining software and hardware aspects that may allgenerally be referred to herein as a “circuit,” “module” or “system.”Furthermore, aspects of the present invention may take the form of acomputer program product embodied in one or more computer readablemedium(s) having computer readable program code embodied thereon.

Any combination of one or more computer readable medium(s) may beutilized. The computer readable medium may be a computer readable signalmedium or a computer readable storage medium. In this specification, theterm “memory device” 94, 95 represents a computer readable storagemedium. A computer readable storage medium may be, for example, but notlimited to, an electronic, magnetic, optical, electromagnetic, infrared,or semiconductor system, apparatus, or device, or any suitablecombination of the foregoing. More specific examples (a non-exhaustivelist) of the computer readable storage medium would include thefollowing: an electrical connection having one or more wires, a portablecomputer diskette, a hard disk, a random access memory (RAM), aread-only memory (ROM), an erasable programmable read-only memory (EPROMor Flash memory), an optical fiber, a portable compact disc read-onlymemory (CD-ROM), an optical storage device, a magnetic storage device,or any suitable combination of the foregoing. In the context of thisdocument, a computer readable storage medium may be any tangible mediumthat can contain, or store a program for use by or in connection with aninstruction execution system, apparatus, or device.

A computer readable signal medium may include a propagated data signalwith computer readable program code embodied therein, for example, inbaseband or as part of a carrier wave. Such a propagated signal may takeany of a variety of forms, including, but not limited to,electro-magnetic, optical, or any suitable combination thereof. Acomputer readable signal medium may be any computer readable medium thatis not a computer readable storage medium and that can communicate,propagate, or transport a program for use by or in connection with aninstruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmittedusing any appropriate medium, including but not limited to wireless,wireline, optical fiber cable, radio frequency (RF), etc., or anysuitable combination of the foregoing.

Computer program code 97 for carrying out operations for aspects of thepresent invention may be written in any combination of one or moreprogramming languages, including an object oriented programming languagesuch as Java, Smalltalk, C++ or the like and conventional proceduralprogramming languages, such as the “C” programming language or similarprogramming languages. The computer program code 97 may execute entirelyon the user's computer, partly on the user's computer, as a stand-alonesoftware package, partly on the user's computer and partly on a remotecomputer or entirely on the remote computer or server. In the latterscenario, the remote computer may be connected to the user's computerthrough any type of network, including a local area network (LAN) or awide area network (WAN), or the connection may be made to an externalcomputer (for example, through the Internet using an Internet ServiceProvider).

Aspects of the present invention are described with reference toflowchart illustrations and/or block diagrams of methods, apparatus(systems) and computer program products according to embodiments of theinvention. It will be understood that each block of the flowchartillustrations and/or block diagrams, and combinations of blocks in theflowchart illustrations and/or block diagrams, can be implemented bycomputer program instructions. The term “computer program instructions”is interchangeable with the term “computer program code” 97 in thisspecification. These computer program instructions may be provided to aprocessor of a general purpose computer, special purpose computer, orother programmable data processing apparatus to produce a machine, suchthat the instructions, which execute via the processor of the computeror other programmable data processing apparatus, create means forimplementing the functions/acts specified in the flowchart and/or blockdiagram block or blocks.

These computer program instructions may also be stored in a computerreadable storage medium that can direct a computer, other programmabledata processing apparatus, or other devices to function in a particularmanner, such that the instructions stored in the computer readablestorage medium produce an article of manufacture including instructionswhich implement the function/act specified in the flowchart and/or blockdiagram block or blocks.

The computer program instructions may also be loaded onto a computer,other programmable data processing apparatus, or other devices to causea series of operational steps to be performed on the computer, otherprogrammable apparatus or other devices to produce a computerimplemented process such that the instructions which execute on thecomputer or other programmable apparatus provide processes forimplementing the functions/acts specified in the flowchart and/or blockdiagram block or blocks.

The flowchart and block diagrams in the Figures illustrate thearchitecture, functionality, and operation of possible implementationsof systems, methods and computer program products according to variousembodiments of the present invention. In this regard, each block in theflowchart or block diagrams may represent a module, segment, or portionof code, which comprises one or more executable instructions forimplementing the specified logical function(s). It should also be notedthat, in some alternative implementations, the functions noted in theblock may occur out of the order noted in the figures. For example, twoblocks shown in succession may, in fact, be executed substantiallyconcurrently, or the blocks may sometimes be executed in the reverseorder, depending upon the functionality involved. It will also be notedthat each block of the block diagrams and/or flowchart illustration, andcombinations of blocks in the block diagrams and/or flowchartillustration, can be implemented by special purpose hardware-basedsystems that perform the specified functions or acts, or combinations ofspecial purpose hardware and computer instructions.

The corresponding structures, materials, acts, and equivalents of allmeans or step plus function elements in the claims are intended toinclude any structure, material, or act for performing the function incombination with other claimed elements as specifically claimed. Thedescription of the present invention has been presented for purposes ofillustration and description, but is not intended to be exhaustive orlimited to the invention in the form disclosed. Many modifications andvariations will be apparent to those of ordinary skill in the artwithout departing from the scope and spirit of the invention. Theembodiment was chosen and described in order to best explain theprinciples of the invention and the practical application, and to enableothers of ordinary skill in the art to understand the invention forvarious embodiments with various modifications as are suited to theparticular use contemplated.

What is claimed is:
 1. A method for contextualizing a page turn in anelectronic book pursuant to a snap gesture made by a user on a touchscreen of a tablet device, wherein said method is performed by ane-reader program running in the tablet device, said method comprising:quantifying the snap gesture, responsive to receiving the snap gesturevia the touch screen, wherein the quantified snap gesture comprises afirst data element of direction of the snap gesture (Dr) and a seconddata element of linger time of the snap gesture (LT); identifying atarget page number for the page turn in the electronic book by use ofthe quantified snap gesture; and displaying, on the touch screen, atarget page of the electronic book that corresponds to the target pagenumber from said identifying.
 2. The method of claim 1, said quantifyingcomprising: detecting a point of contact that initiates the snap gestureon the touch screen at a first point in time T0, wherein the touchscreen is a capacitive-resistive type such that the touch screenprovides data pertinent to capacity and resistance of the point ofcontact to the e-reader program; recording movement of the point ofcontact, upon determining that the point of contact starts moving at asecond point in time T1, while the point of contact exists on the touchscreen, wherein T1 is greater than T0; calculating LT as being equal to(T1−T0); calculating Dr from the recorded movement of the point ofcontact, wherein the calculated Dr is selected from a group consistingof {forward, backward }; and storing the calculated Dr and LT as thequantified snap gesture such that the e-reader program utilizes thestored Dr and LT in said identifying.
 3. The method of claim 2, saidquantifying further comprising: calculating a third data element ofdistance of the snap gesture (D) indicating a track length made by thepoint of contact during said recording the movement, that is (T2−T1),wherein T2 is a third point in time on which the point of contact islost, wherein T2 is greater than T1; and storing the calculated D, Dr,and LT as the quantified snap gesture such that the e-reader programutilizes the stored D, Dr, and LT in said identifying.
 4. The method ofclaim 1, said identifying comprising: mapping Dr to a respectivemathematical operation corresponding to each Dr value, wherein a firstDr value “forward” corresponds to addition (+), and wherein a second Drvalue “backward” corresponds to subtraction (−); determining that theelectronic book is organized in sections grouping pages into disjointsets within the electronic book; discovering a section turn valuecorresponding to the quantified snap gesture; calculating a targetsection number by applying the mathematical operation corresponding toDr from said mapping to a current section value and the discoveredsection turn value, wherein the current section value is a section valuebeing displayed when the snap gesture is received; and selecting thetarget page number in the calculated target section number pursuant to apredefined manner.
 5. The method of claim 1, said identifyingcomprising: mapping Dr to a respective mathematical operationcorresponding to each Dr value, wherein a first Dr value “forward”corresponds to addition (+), and wherein a second Dr value “backward”corresponds to subtraction (−); determining that the electronic book isorganized in disjoint pages within the electronic book; and discoveringa page turn value corresponding to the quantified snap gesture;calculating a target page number by applying the mathematical operationcorresponding to Dr from said mapping to a current page value and thediscovered page turn value, wherein the current page value is a pagevalue being displayed when the snap gesture is received.
 6. A computerprogram product comprising: a computer readable storage medium having acomputer readable program code embodied therein, said computer readableprogram code containing instructions that perform contextualizing a pageturn in an electronic book pursuant to a snap gesture made by a user ona touch screen of a tablet device, wherein said contextualizing isperformed by an e-reader program running in the tablet device, saidcontextualizing comprising: quantifying the snap gesture, responsive toreceiving the snap gesture via the touch screen, wherein the quantifiedsnap gesture comprises a first data element of direction of the snapgesture (Dr) and a second data element of linger time of the snapgesture (LT); identifying a target page number for the page turn in theelectronic book by use of the quantified snap gesture; and displaying,on the touch screen, a target page of the electronic book thatcorresponds to the target page number from said identifying.
 7. Thecomputer program product of claim 6, said quantifying comprising:detecting a point of contact that initiates the snap gesture on thetouch screen at a first point in time T0, wherein the touch screen is acapacitive-resistive type such that the touch screen provides datapertinent to capacity and resistance of the point of contact to thee-reader program; recording movement of the point of contact, upondetermining that the point of contact starts moving at a second point intime T1, while the point of contact exists on the touch screen, whereinT1 is greater than T0; calculating LT as being equal to (T1−T0);calculating Dr from the recorded movement of the point of contact,wherein the calculated Dr is selected from a group consisting of{forward, backward}; and storing the calculated Dr and LT as thequantified snap gesture such that the e-reader program utilizes thestored Dr and LT in said identifying.
 8. The computer program product ofclaim 7, said quantifying further comprising: calculating a third dataelement of distance of the snap gesture (D) indicating a track lengthmade by the point of contact during said recording the movement, that is(T2−T1), wherein T2 is a third point in time on which the point ofcontact is lost, wherein T2 is greater than T1; and storing thecalculated D, Dr, and LT as the quantified snap gesture such that thee-reader program utilizes the stored D, Dr, and LT in said identifying.9. The computer program product of claim 6, said identifying comprising:mapping Dr to a respective mathematical operation corresponding to eachDr value, wherein a first Dr value “forward” corresponds to addition(+), and wherein a second Dr value “backward” corresponds to subtraction(−); determining that the electronic book is organized in sectionsgrouping pages into disjoint sets within the electronic book;discovering a section turn value corresponding to the quantified snapgesture; calculating a target section number by applying themathematical operation corresponding to Dr from said mapping to acurrent section value and the discovered section turn value, wherein thecurrent section value is a section value being displayed when the snapgesture is received; and selecting the target page number in thecalculated target section number pursuant to a predefined manner. 10.The computer program product of claim 6, said identifying comprising:mapping Dr to a respective mathematical operation corresponding to eachDr value, wherein a first Dr value “forward” corresponds to addition(+), and wherein a second Dr value “backward” corresponds to subtraction(−); determining that the electronic book is organized in disjoint pageswithin the electronic book; and discovering a page turn valuecorresponding to the quantified snap gesture; calculating a target pagenumber by applying the mathematical operation corresponding to Dr fromsaid mapping to a current page value and the discovered page turn value,wherein the current page value is a page value being displayed when thesnap gesture is received.
 11. A computer system comprising a processor,a memory coupled to the processor, and a computer readable storagedevice coupled to the processor, said storage device containing programcode configured to be executed by the processor via the memory toimplement contextualizing a page turn in an electronic book pursuant toa snap gesture made by a user on a touch screen of a tablet device,wherein said contextualizing is performed by an e-reader program runningin the tablet device, said contextualizing comprising: quantifying thesnap gesture, responsive to receiving the snap gesture via the touchscreen, wherein the quantified snap gesture comprises a first dataelement of direction of the snap gesture (Dr) and a second data elementof linger time of the snap gesture (LT); identifying a target pagenumber for the page turn in the electronic book by use of the quantifiedsnap gesture; and displaying, on the touch screen, a target page of theelectronic book that corresponds to the target page number from saididentifying.
 12. The computer system of claim 11, said quantifyingcomprising: detecting a point of contact that initiates the snap gestureon the touch screen at a first point in time T0, wherein the touchscreen is a capacitive-resistive type such that the touch screenprovides data pertinent to capacity and resistance of the point ofcontact to the e-reader program; recording movement of the point ofcontact, upon determining that the point of contact starts moving at asecond point in time T1, while the point of contact exists on the touchscreen, wherein T1 is greater than T0; calculating LT as being equal to(T1−T0); calculating Dr from the recorded movement of the point ofcontact, wherein the calculated Dr is selected from a group consistingof {forward, backward }; and storing the calculated Dr and LT as thequantified snap gesture such that the e-reader program utilizes thestored Dr and LT in said identifying.
 13. The computer system of claim12, said quantifying further comprising: calculating a third dataelement of distance of the snap gesture (D) indicating a track lengthmade by the point of contact during said recording the movement, that is(T2−T1), wherein T2 is a third point in time on which the point ofcontact is lost, wherein T2 is greater than T1; and storing thecalculated D, Dr, and LT as the quantified snap gesture such that thee-reader program utilizes the stored D, Dr, and LT in said identifying.14. The computer system of claim 11, said identifying comprising:mapping Dr to a respective mathematical operation corresponding to eachDr value, wherein a first Dr value “forward” corresponds to addition(+), and wherein a second Dr value “backward” corresponds to subtraction(−); determining that the electronic book is organized in sectionsgrouping pages into disjoint sets within the electronic book;discovering a section turn value corresponding to the quantified snapgesture; calculating a target section number by applying themathematical operation corresponding to Dr from said mapping to acurrent section value and the discovered section turn value, wherein thecurrent section value is a section value being displayed when the snapgesture is received; and selecting the target page number in thecalculated target section number pursuant to a predefined manner. 15.The computer system of claim 11, said identifying comprising: mapping Drto a respective mathematical operation corresponding to each Dr value,wherein a first Dr value “forward” corresponds to addition (+), andwherein a second Dr value “backward” corresponds to subtraction (−);determining that the electronic book is organized in disjoint pageswithin the electronic book; and discovering a page turn valuecorresponding to the quantified snap gesture; calculating a target pagenumber by applying the mathematical operation corresponding to Dr fromsaid mapping to a current page value and the discovered page turn value,wherein the current page value is a page value being displayed when thesnap gesture is received.
 16. A process for supporting computerinfrastructure, said process comprising providing at least one supportservice for at least one of creating, integrating, hosting, maintaining,and deploying computer-readable code in a computing system, wherein thecode in combination with the computing system is capable of performingcontextualizing a page turn in an electronic book pursuant to a snapgesture made by a user on a touch screen of a tablet device, whereinsaid contextualizing is performed by an e-reader program running in thetablet device, said contextualizing comprising: quantifying the snapgesture, responsive to receiving the snap gesture via the touch screen,wherein the quantified snap gesture comprises a first data element ofdirection of the snap gesture (Dr) and a second data element of lingertime of the snap gesture (LT); identifying a target page number for thepage turn in the electronic book by use of the quantified snap gesture;and displaying, on the touch screen, a target page of the electronicbook that corresponds to the target page number from said identifying.17. The process of claim 16, said quantifying comprising: detecting apoint of contact that initiates the snap gesture on the touch screen ata first point in time T0, wherein the touch screen is acapacitive-resistive type such that the touch screen provides datapertinent to capacity and resistance of the point of contact to thee-reader program; recording movement of the point of contact, upondetermining that the point of contact starts moving at a second point intime T1, while the point of contact exists on the touch screen, whereinT1 is greater than T0; calculating LT as being equal to (T1-T0);calculating Dr from the recorded movement of the point of contact,wherein the calculated Dr is selected from a group consisting of{forward, backward }; and storing the calculated Dr and LT as thequantified snap gesture such that the e-reader program utilizes thestored Dr and LT in said identifying.
 18. The process of claim 17, saidquantifying further comprising: calculating a third data element ofdistance of the snap gesture (D) indicating a track length made by thepoint of contact during said recording the movement, that is (T2−T1),wherein T2 is a third point in time on which the point of contact islost, wherein T2 is greater than T1; and storing the calculated D, Dr,and LT as the quantified snap gesture such that the e-reader programutilizes the stored D, Dr, and LT in said identifying.
 19. The processof claim 16, said identifying comprising: mapping Dr to a respectivemathematical operation corresponding to each Dr value, wherein a firstDr value “forward” corresponds to addition (+), and wherein a second Drvalue “backward” corresponds to subtraction (−); determining that theelectronic book is organized in sections grouping pages into disjointsets within the electronic book; discovering a section turn valuecorresponding to the quantified snap gesture; calculating a targetsection number by applying the mathematical operation corresponding toDr from said mapping to a current section value and the discoveredsection turn value, wherein the current section value is a section valuebeing displayed when the snap gesture is received; and selecting thetarget page number in the calculated target section number pursuant to apredefined manner.
 20. The process of claim 16, said identifyingcomprising: mapping Dr to a respective mathematical operationcorresponding to each Dr value, wherein a first Dr value “forward”corresponds to addition (+), and wherein a second Dr value “backward”corresponds to subtraction (−); determining that the electronic book isorganized in disjoint pages within the electronic book; and discoveringa page turn value corresponding to the quantified snap gesture;calculating a target page number by applying the mathematical operationcorresponding to Dr from said mapping to a current page value and thediscovered page turn value, wherein the current page value is a pagevalue being displayed when the snap gesture is received.